I didn't read the OP because I looked into Uruguay's previously-touted "98% renewable" last month and I doubt anything's changed.[1] I read a great study from 2022[2] and figured out the accounting trickery behind the claims.

Basically, the windmills are overbuilt past the demand, which is supplied by mostly hydroelectric and enough natgas. The wind energy is exported to neighboring Brazil and Argentina through interconnects.

[1] https://twitter.com/billbrown/status/1714311001569693749

[2] https://www.sciencedirect.com/science/article/pii/S030142152...